AWS S3 Bucket Versioning Disable

Description

Detects when S3 bucket versioning is disabled. Threat actors use this technique during AWS ransomware incidents prior to deleting S3 objects.

Query · sigma

selection:
  eventSource: s3.amazonaws.com
  eventName: PutBucketVersioning
  requestParameters|contains: Suspended
condition: selection

Known false positives

  • AWS administrator legitimately disabling bucket versioning
Raw source AWS S3 Bucket Versioning Disable · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: AWS S3 Bucket Versioning Disable
id: a136ac98-b2bc-4189-a14d-f0d0388e57a7
status: test
description: Detects when S3 bucket versioning is disabled. Threat actors use this technique during AWS ransomware incidents prior to deleting S3 objects.
references:
    - https://invictus-ir.medium.com/ransomware-in-the-cloud-7f14805bbe82
author: Sean Johnstone | Unit 42
date: 2023-10-28
tags:
    - attack.impact
    - attack.t1490
logsource:
    product: aws
    service: cloudtrail
detection:
    selection:
        eventSource: s3.amazonaws.com
        eventName: PutBucketVersioning
        requestParameters|contains: 'Suspended'
    condition: selection
falsepositives:
    - AWS administrator legitimately disabling bucket versioning
level: medium

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